Progressive fork springs

  • Fourtoes
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Progressive fork springs

01 Apr 2008 16:41 - 02 Apr 2008 01:58
#203599
Just a quick question.

Is it a straight swap changing to progressive fork springs in my 1979 Z650?

Take off fork tops, out with old springs in with new, top up oil????

PS not getting on with this new website/forum layout.
Last edit: 02 Apr 2008 01:58 by Fourtoes. Reason: Spelling

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  • rstnick
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Re: Progressive fork springs

01 Apr 2008 19:12 - 01 Apr 2008 19:13
#203618
out with old springs in with old

Should be in with new.

I'd think it'd be a straight swap.

I have Magnum Progressive springs in my forks, but they were put in by a shop in the '80s.
While doing a fork oil change a few years back, I found it odd that I did not have to compress the springs to get the top caps back on the forks.
After some inquiring here on the forum, I decided to add a spacer made out of metal which was about 3/4~1" thick on top of the springs. Some mentioned that there should be some compression of progressive springs to get the caps on. I tried putting two spacers in each fork, but could not get the caps back on.
With the one spacer I have found it improved the problem I was having at the time, some bouncing and unstableness over multiple bumps in the road.

Apparently in some progressive spring kits, you get spacers that come with them.
Rob
CANADA

Need a key for your Kawasaki? PM me

1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
1978 KZ1000 project
1983 KZ1000R2 Project
Last edit: 01 Apr 2008 19:13 by rstnick.

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  • 650ed
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Re: Progressive fork springs

01 Apr 2008 19:41
#203628
If you haven't changed your fork oil lately this might be a good time to do it since you'll be doing 90% of the work by pulling the fork caps and measuring the oil level anyway. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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